Ccna certification Practice Tests

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 11.  B.  The application programming interface (API) on the device that is to be controlled 

through automation should be researched. The API is a method for controlling devices 

with programmability control; this includes the import and export of information. 

The user interface layout is more accustomed to users and manual configuration, since 

programs do not use the user interface. The source code and data storage methods for the 

device are not normally attainable and do not really get you what you need to control the 

device.

 12.  B.  The Simple Network Management Protocol (SNMP) was originally created to allow 

retrieval of information from network devices and can be programmatically controlled, 

similar to an application programming interface (API). The command-line interface (CLI) 

is what the user will interface with; therefore, it is considered a type of user interface (UI). 

Syslog is a method of sending logging information to remote syslog servers. Secure Shell 

(SSH) is a method for connectivity and not used as an API.

 13.  A.  The NETCONF protocol was created as a replacement for the dated Simple Network 

Management Protocol (SNMP). Syslog is a system of formatted messages for log file 

storage, either local or remote, via the syslog protocol. Representational state transfer 

(REST) is a set of constraints used for sending data to and from services. Secure Shell 

(SSH) is a method of connecting to network devices through a console-based terminal 

emulator.

 14.  A.  The NETCONF protocol was created to interface with network devices over the SSH 

protocol. Data transferred to and from network devices with the NETCONF protocol 

must adhere to the Yet Another Next Generation (YANG) data model. Representational 

state transfer (REST) is a set of constraints used for sending data to and from services. 

Simple Network Management Protocol (SNMP) is a network management protocol used 

to retrieve and send information to remote network devices. YAML is a markup language 

used to store and transfer data between applications.

 15.  B.  The RESTCONF protocol is used with a Hypertext Transfer Protocol Secure (HTTPS) 

transport protocol. RESTCONF is the successor of NETCONF, which uses SSH for 

device access. RESTCONF now uses a common transport of HTTPS to send and retrieve 

information from network devices. Simple Network Management Protocol (SNMP) 

defines its own standard of information set and retrieval and does not use HTTPS. Syslog 

is a system of formatted messages for log file storage either local or remote via the syslog 

protocol.

 16.  A.  A benefit of controller-based networking is increased security. When ACLs and filters 

are applied, they are applied informally to all nodes that are controlled by the controller. 

There is not a reduction of problems that can be encountered in a network with the 

introduction of controller-based networking. Throughput will not increase magically 

because of the introduction of controller-based networking. Complexity should be reduced 

with the introduction of controller-based networking because all of the configuration is 

centralized.

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